Not within the app, but there's an app called Bit Finder Geo that's free and acts like a metal detector for Fitbits. Turn your BT on after you download the app and it will ping all nearby Fitbits once you're where you think you lost it. As you get closer to the Fitbit, the pinging becomes louder.
Kristen | USA Cruising through the Lifestyle Forums
one cruise ship at a time!